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<head><meta charset="utf-8"><title>weekly meeting 2019-08-01 #54818 · t-compiler · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/index.html">t-compiler</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html">weekly meeting 2019-08-01 #54818</a></h3>

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<a name="172219135"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172219135" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172219135">(Aug 01 2019 at 13:17)</a>:</h4>
<p><span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span> ; the triage meeting will be starting in slightly more than 40 minutes</p>



<a name="172219204"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172219204" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172219204">(Aug 01 2019 at 13:18)</a>:</h4>
<p>Pre-triage is <a href="#narrow/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-08-01.20.2354818" title="#narrow/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-08-01.20.2354818">here</a>.</p>



<a name="172222982"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172222982" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172222982">(Aug 01 2019 at 14:01)</a>:</h4>
<p><span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span> lets begin, shall we? Starting with 5 mins for announcements.</p>



<a name="172223265"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172223265" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172223265">(Aug 01 2019 at 14:04)</a>:</h4>
<p>we are still looking to fill the experts map <a href="https://github.com/rust-lang/compiler-team/issues/87" target="_blank" title="https://github.com/rust-lang/compiler-team/issues/87">https://github.com/rust-lang/compiler-team/issues/87</a>, with experts, knowledgeable people and directories of the different parts of the compiler, even commenting on the issue if easier would work :)</p>



<a name="172223350"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172223350" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172223350">(Aug 01 2019 at 14:04)</a>:</h4>
<p>I will note that there will not be a checkin this week either, but there appears to be progress towards making schedule available.</p>



<a name="172223432"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172223432" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172223432">(Aug 01 2019 at 14:05)</a>:</h4>
<p>Okay, so without further ado, issues. I have pre-triaged some <code>I-nominated</code> issues, but two are remaining</p>



<a name="172223439"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172223439" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172223439">(Aug 01 2019 at 14:05)</a>:</h4>
<p><strong>Bug running cargo check</strong> <a href="https://github.com/rust-lang/rust/issues/63150" target="_blank" title="https://github.com/rust-lang/rust/issues/63150">#63150</a></p>



<a name="172223521"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172223521" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172223521">(Aug 01 2019 at 14:06)</a>:</h4>
<p>P-high, probably. Is there any guesses as to whom would be the best person to look into this?</p>



<a name="172223650"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172223650" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172223650">(Aug 01 2019 at 14:07)</a>:</h4>
<p>Appears to be related to dependency tracking stuff, so perhaps <span class="user-mention" data-user-id="124287">@mw</span>? It has been a while since I’ve last seen them</p>



<a name="172223759"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172223759" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172223759">(Aug 01 2019 at 14:08)</a>:</h4>
<p>Okay, marked P-high, without assignee.</p>



<a name="172223768"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172223768" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172223768">(Aug 01 2019 at 14:08)</a>:</h4>
<p>Next is <strong>[MIR] [ICE] Associated types, impl traits and closures; oh my, an ICE.</strong> <a href="https://github.com/rust-lang/rust/issues/63154" target="_blank" title="https://github.com/rust-lang/rust/issues/63154">#63154</a></p>



<a name="172223783"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172223783" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> davidtwco <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172223783">(Aug 01 2019 at 14:09)</a>:</h4>
<blockquote>
<p>Appears to be related to dependency tracking stuff, so perhaps <span class="user-mention silent" data-user-id="124287">mw</span>? It has been a while since I’ve last seen them</p>
</blockquote>
<p>I believe mw is still on leave until some time in August.</p>



<a name="172223832"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172223832" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172223832">(Aug 01 2019 at 14:09)</a>:</h4>
<p>I see.</p>



<a name="172223937"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172223937" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172223937">(Aug 01 2019 at 14:10)</a>:</h4>
<p>For the MIR issue, it seems like a typical insufficient normalization issue.</p>



<a name="172224003"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172224003" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172224003">(Aug 01 2019 at 14:11)</a>:</h4>
<p>The fact that <code>miri check</code> does work suggests that all that’s needed here will be a normalize() call somewhere.</p>



<a name="172224148"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172224148" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172224148">(Aug 01 2019 at 14:13)</a>:</h4>
<p>Marked as P-high, wrote a comment. Moving on.</p>



<a name="172224179"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172224179" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172224179">(Aug 01 2019 at 14:13)</a>:</h4>
<p>Our list of <code>P-high</code> issues is longer than we could hope to handle, so I picked only a few that appear to have had something interesting happen.</p>



<a name="172224246"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172224246" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172224246">(Aug 01 2019 at 14:14)</a>:</h4>
<p><strong>internal error: entered unreachable code</strong> <a href="https://github.com/rust-lang/rust/issues/63164" target="_blank" title="https://github.com/rust-lang/rust/issues/63164">#63164</a></p>



<a name="172224290"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172224290" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172224290">(Aug 01 2019 at 14:14)</a>:</h4>
<p>I wrote a comment there about how it would be great to have a reproducer that did not depend on plugin codegen, but I also suspect that it may not be possible to write such an example.</p>



<a name="172224384"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172224384" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172224384">(Aug 01 2019 at 14:15)</a>:</h4>
<p>Not sure what else is there to discuss.</p>



<a name="172224472"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172224472" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172224472">(Aug 01 2019 at 14:16)</a>:</h4>
<p><span class="user-mention" data-user-id="119031">@Esteban Küber</span> also noted a possible area in code where this is likely coming out from.</p>



<a name="172224550"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172224550" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172224550">(Aug 01 2019 at 14:17)</a>:</h4>
<p>FWIW using all sorts of procedural macros did lead to all weird error conditions in my experience, but never an ICE.</p>



<a name="172224629"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172224629" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172224629">(Aug 01 2019 at 14:18)</a>:</h4>
<p>/me removes <code>I-nominated</code> and moves on seeing as there are few opinions on the topic.</p>



<a name="172224642"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172224642" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172224642">(Aug 01 2019 at 14:18)</a>:</h4>
<p><strong>libcore fails to compile for thumbv6m-none-eabi</strong> <a href="https://github.com/rust-lang/rust/issues/62932" target="_blank" title="https://github.com/rust-lang/rust/issues/62932">#62932</a> has had nice progress, LLVM bug reported, so skipping this one.</p>



<a name="172224679"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172224679" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172224679">(Aug 01 2019 at 14:19)</a>:</h4>
<p><strong>Segfault compiling libc on nightly-armv7-unknown-linux-gnueabihf</strong> <a href="https://github.com/rust-lang/rust/issues/62896" target="_blank" title="https://github.com/rust-lang/rust/issues/62896">#62896</a> related to LLVM upgrade as well, but the root cause has not yet been pinned down.</p>



<a name="172224798"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172224798" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172224798">(Aug 01 2019 at 14:20)</a>:</h4>
<p>For this issue the backtraces are incorrect as they are for the SIGUSR1 signal, not sigsegv one.</p>



<a name="172224807"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172224807" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172224807">(Aug 01 2019 at 14:20)</a>:</h4>
<p>but people did narrow it down to LLVM.</p>



<a name="172224853"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172224853" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172224853">(Aug 01 2019 at 14:21)</a>:</h4>
<p>I suspect that this is gonna be a LLVM assertion</p>



<a name="172224863"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172224863" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172224863">(Aug 01 2019 at 14:21)</a>:</h4>
<p>would be good for somebody to get it.</p>



<a name="172225177"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172225177" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172225177">(Aug 01 2019 at 14:24)</a>:</h4>
<p>Wrote a comment to that effect.</p>



<a name="172225186"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172225186" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172225186">(Aug 01 2019 at 14:25)</a>:</h4>
<p><strong>Undefined symbol _fltused when compiling to x86_64-unknown-uefi</strong> <a href="https://github.com/rust-lang/rust/issues/62785" target="_blank" title="https://github.com/rust-lang/rust/issues/62785">#62785</a> No update since last week, skip.</p>



<a name="172225202"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172225202" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172225202">(Aug 01 2019 at 14:25)</a>:</h4>
<p><strong>Recent nightly versions break thumb* targets</strong> <a href="https://github.com/rust-lang/rust/issues/62781" target="_blank" title="https://github.com/rust-lang/rust/issues/62781">#62781</a></p>



<a name="172225214"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172225214" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172225214">(Aug 01 2019 at 14:25)</a>:</h4>
<p>Now this is a good issue to discuss our policy on</p>



<a name="172225251"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172225251" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172225251">(Aug 01 2019 at 14:25)</a>:</h4>
<p>namely, does adding or removing sections emitted by the compiler constitute a breaking change?</p>



<a name="172225318"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172225318" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172225318">(Aug 01 2019 at 14:26)</a>:</h4>
<p>I’m strongly of the opinion that it does not, but it appears that other people think otherwise.</p>



<a name="172225366"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172225366" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172225366">(Aug 01 2019 at 14:26)</a>:</h4>
<p>If we do consider that to be an acceptable change, then this issue is technically not a bug.</p>



<a name="172225489"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172225489" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172225489">(Aug 01 2019 at 14:28)</a>:</h4>
<p>It may make sense to ask T-lang to have their say on the topic.</p>



<a name="172225746"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172225746" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172225746">(Aug 01 2019 at 14:31)</a>:</h4>
<p>Okay, we have no backports to investigate</p>



<a name="172225753"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172225753" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172225753">(Aug 01 2019 at 14:31)</a>:</h4>
<p>and I just got a page to go and put out some fires.</p>



<a name="172225755"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172225755" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172225755">(Aug 01 2019 at 14:31)</a>:</h4>
<p>So I’ll wrap this meeting early.</p>



<a name="172226021"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172226021" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> oli <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172226021">(Aug 01 2019 at 14:34)</a>:</h4>
<p>Thanks for doing pre-triage and driving <span class="user-mention" data-user-id="123586">@nagisa</span></p>



<a name="172226961"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172226961" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172226961">(Aug 01 2019 at 14:43)</a>:</h4>
<p>Thanks everybody for participating!</p>



<a name="172245855"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172245855" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172245855">(Aug 01 2019 at 18:17)</a>:</h4>
<p><span class="user-mention" data-user-id="123586">@nagisa</span> Did you want to nominate <a href="https://github.com/rust-lang/rust/issues/62781" target="_blank" title="https://github.com/rust-lang/rust/issues/62781">#62781</a> for the lang team?</p>



<a name="172246010"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172246010" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172246010">(Aug 01 2019 at 18:18)</a>:</h4>
<blockquote>
<p><span class="user-mention silent" data-user-id="123586">nagisa</span> Did you want to nominate <a href="https://github.com/rust-lang/rust/issues/62781" target="_blank" title="https://github.com/rust-lang/rust/issues/62781">#62781</a> for the lang team?</p>
</blockquote>
<p>Maybe. I don’t mind if it is not discussed ASAP as long as y'all ever get to it to make a decision <span aria-label="slight smile" class="emoji emoji-1f642" role="img" title="slight smile">:slight_smile:</span></p>



<a name="172246047"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-08-01%20%2354818/near/172246047" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-08-01.20.2354818.html#172246047">(Aug 01 2019 at 18:18)</a>:</h4>
<p><span class="user-mention" data-user-id="123586">@nagisa</span> I'll take that as a "yes, if you have time" :P</p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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